National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Boston, Logan International Airport (KBOS)

Lat: 42.36°NLon: 71.01°WElev: 20ft.

Overcast

75°F

24°C

Humidity 79%
Wind Speed SW 8 mph
Barometer 29.91 in (1012.6 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 18 Jun 1:54 pm EDT
Extended Forecast for

Weymouth MA

Heat Advisory June 19, 11:00am until June 19, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 79. Southwest wind around 8 mph.

    High: 79 °F

    Mostly Cloudy

  • Tonight

    Tonight: Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 66. South wind 3 to 7 mph.

    Low: 66 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Juneteenth

    Juneteenth: Mostly cloudy through mid morning, then gradual clearing and hot, with a high near 95. Heat index values as high as 102. Southwest wind 6 to 13 mph.

    High: 95 °F

    Hot

  • Thursday Night

    Thursday Night: Isolated showers and thunderstorms between 9pm and 11pm. Partly cloudy, with a low around 67. Southwest wind 9 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    Low: 67 °F

    Isolated
    T-storms then
    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 81. Northwest wind around 11 mph, with gusts as high as 21 mph.

    High: 81 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 61. West wind around 6 mph.

    Low: 61 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 85. West wind 5 to 7 mph.

    High: 85 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 67. Southwest wind around 6 mph.

    Low: 67 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 87. Southwest wind 7 to 10 mph.

    High: 87 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 79. Southwest wind around 8 mph.
Tonight
Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 66. South wind 3 to 7 mph.
Juneteenth
Mostly cloudy through mid morning, then gradual clearing and hot, with a high near 95. Heat index values as high as 102. Southwest wind 6 to 13 mph.
Thursday Night
Isolated showers and thunderstorms between 9pm and 11pm. Partly cloudy, with a low around 67. Southwest wind 9 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Friday
Mostly sunny, with a high near 81. Northwest wind around 11 mph, with gusts as high as 21 mph.
Friday Night
Mostly clear, with a low around 61. West wind around 6 mph.
Saturday
Mostly sunny, with a high near 85. West wind 5 to 7 mph.
Saturday Night
Mostly cloudy, with a low around 67. Southwest wind around 6 mph.
Sunday
Mostly sunny, with a high near 87. Southwest wind 7 to 10 mph.
Sunday Night
Partly cloudy, with a low around 69. Southwest wind around 7 mph.
Monday
Mostly sunny and hot, with a high near 90. Southwest wind 6 to 8 mph.
Monday Night
Partly cloudy, with a low around 71. Southwest wind around 7 mph.
Tuesday
Mostly sunny and hot, with a high near 94. West wind 6 to 8 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Weymouth MA
 42.19°N 70.93°W (Elev. 98 ft)
Last Update:
12:36 pm EDT Jun 18, 2025
Forecast Valid:
2pm EDT Jun 18, 2025-6pm EDT Jun 24, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation